CN216209531U - Zinc oxide arrester live line measuring device - Google Patents
Zinc oxide arrester live line measuring device Download PDFInfo
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- CN216209531U CN216209531U CN202122445269.9U CN202122445269U CN216209531U CN 216209531 U CN216209531 U CN 216209531U CN 202122445269 U CN202122445269 U CN 202122445269U CN 216209531 U CN216209531 U CN 216209531U
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- oxide arrester
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Abstract
The utility model relates to a zinc oxide arrester live-line measurement device, and belongs to the technical field of zinc oxide arrester monitoring equipment. The leakage current sensor, the voltage isolator and the host are included; the leakage current sensor is provided with a first wireless communication module, the input end of the leakage current sensor is electrically connected with a current sampling assembly, and the output end of the leakage current sensor is in wireless communication connection with the host through the first wireless communication module; the voltage isolator is provided with a second wireless communication module, the input end of the voltage isolator is electrically connected with a voltage sampling clamp, and the output end of the voltage isolator is in wireless communication connection with a host through the second wireless communication module. The utility model solves the problems that the zinc oxide arrester measuring device in the prior art needs to be operated by a plurality of persons at the same time and the like.
Description
Technical Field
The utility model relates to a zinc oxide arrester live-line measurement device, and belongs to the technical field of zinc oxide arrester monitoring equipment.
Background
In order to ensure the safe operation of an electric power system, the zinc oxide arrester becomes one of important protection devices in a transformer substation, and the zinc oxide arrester mainly has the function of providing a proper current leakage channel for main equipment in the transformer substation when the main equipment is impacted by lightning overvoltage transmitted by a line or internal overvoltage caused by operation, so that faults such as tripping and the like caused by impact of the main equipment are avoided; the insulation level of equipment is often reduced due to the fact that a zinc oxide arrester in operation is affected with damp when water enters, an internal valve plate is aged and the like, and body explosion can be caused by defect faults, so that the safe operation of the whole transformer substation and even a power grid is endangered; therefore, the method is a necessary measure for ensuring the normal operation of the zinc oxide arrester by regularly carrying out live detection on the zinc oxide arrester in operation, tracking the degraded zinc oxide arrester in operation and monitoring the development trend of the degradation.
The conventional zinc oxide arrester testing device has the problems of incomplete instrument function, limited testing precision, long time consumption, incapability of carrying out online monitoring and the like, and requires multiple persons to carry out operation simultaneously, so that the utility model provides the zinc oxide arrester live-line measuring device for solving the problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects that the existing zinc oxide arrester measuring device needs to be operated by multiple persons simultaneously and the like, the utility model designs the zinc oxide arrester live line measuring device which has the advantages of complete instrument functions, high testing precision, small personnel demand, short consumed time and capability of carrying out online monitoring.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a zinc oxide arrester live line measuring device comprises a leakage current sensor, a voltage isolator and a host; the leakage current sensor is provided with a first wireless communication module, the input end of the leakage current sensor is electrically connected with a current sampling assembly, and the output end of the leakage current sensor is in wireless communication connection with the host through the first wireless communication module; the voltage isolator is provided with a second wireless communication module, the input end of the voltage isolator is electrically connected with a voltage sampling clamp, and the output end of the voltage isolator is in wireless communication connection with the host through the second wireless communication module; the current sampling assembly comprises a current transformer and a fixer for fixing the current transformer on a wire, the current transformer is fixedly connected with an upright post, and the fixer is fixedly connected with the upright post.
The fixer comprises a C-shaped hook and a clamping support, one end of the C-shaped hook is fixedly connected with a screw rod, one end, far away from the C-shaped hook, of the screw rod is fixedly connected with the stand column, a through hole is formed in the clamping support, the clamping support is movably sleeved on the screw rod through the through hole, and an adjusting nut is connected to the screw rod in a threaded mode.
The host comprises a signal synchronization module, a data processing module and a display module, wherein the data processing module is used for receiving, processing and storing data; the output end of the leakage current sensor is in wireless communication connection with the input end of the signal synchronization module through a first wireless communication module, and the output end of the voltage isolator is in wireless communication connection with the input end of the signal synchronization module through a second wireless communication module; the output end of the signal synchronization module is connected with the input end of the data processing module, and the output end of the data processing module is in communication connection with the display module.
The host computer also comprises a signal output module, and the signal output module provides a plurality of interfaces for transmitting data to the computer terminal.
The upright post is movably sleeved with a sleeve, one end, far away from the C-shaped hook, of the screw is fixedly connected with the sleeve, a screw is arranged outside the sleeve, the threaded end of the screw penetrates through the sleeve to tightly push the upright post, and the screw is in threaded connection with the sleeve.
The top end of the clamping support is arranged in an arc shape.
Compared with the prior art, the utility model has the following characteristics and beneficial effects: according to the utility model, through the arrangement of the leakage current sensor, the first wireless communication module, the voltage isolator, the second wireless communication module and the host, the full current and the resistive current of the zinc oxide arrester under the power frequency voltage can be rapidly and accurately measured under the condition that the zinc oxide arrester is not disconnected, the measurement is stable and the repeatability is high; the wireless transmission communication technology is adopted, and the wireless network is utilized to transmit and store data in real time, so that the safety and the real-time performance of the data are ensured; meanwhile, the portable ultrasonic probe is convenient to carry, and can be used for completing measurement by one person, so that the labor intensity of operators is reduced. Has the advantages of difficult damage, simple and convenient operation, low manufacturing cost and the like;
according to the utility model, the current sampling assembly can be fixed on the grounding wire of the zinc oxide arrester base through the arrangement of the fixer, so that the current sampling assembly does not need to be placed on the ground or clamped on other components, the measurement precision is increased, and meanwhile, the labor intensity of workers is reduced;
the utility model can adapt to grounding wires of different specifications by arranging the fixer, thereby increasing the applicability of the utility model.
Drawings
FIG. 1 is a schematic view of the connection structure of the present invention;
FIG. 2 is a schematic diagram of a current sampling assembly according to the present invention;
fig. 3 is a top plan view in full section of the anchor of the present invention.
Wherein the reference numerals are: 1. a leakage current sensor; 12. a current sampling assembly; 13. a current transformer; 131. a column; 14. a holder; 141. a C-shaped hook; 142. a clamping support; 143. a screw; 144. adjusting the nut; 145. a sleeve; 146. a screw; 147. a through hole; 2. a first wireless communication module; 3. a voltage isolator; 32. a voltage sampling clamp; 4. a second wireless communication module; 5. a host; 51. A signal synchronization module; 52. a data processing module; 53. a display module; 54. a signal output module; 6. A bus bar; 7. PT terminal box.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 3, the zinc oxide arrester electrification measuring device of the present embodiment includes a leakage current sensor 1, a voltage isolator 3, and a host 5; the leakage current sensor 1 is provided with a first wireless communication module 2, the input end of the leakage current sensor 1 is electrically connected with a current sampling assembly 12, and the output end of the leakage current sensor 1 is in wireless communication connection with the host 5 through the first wireless communication module 2; the voltage isolator 3 is provided with a second wireless communication module 4, the input end of the voltage isolator 3 is electrically connected with a voltage sampling clamp 32, and the output end of the voltage isolator is in wireless communication connection with the host 5 through the second wireless communication module 4; the current sampling assembly 12 comprises a current transformer 13 and a fixer 14 for fixing the current transformer 13 on a lead, wherein the current transformer 13 is fixedly connected with a stand column 131, and the fixer 14 is fixedly connected with the stand column 131.
Further, the fixer 14 includes a C-shaped hook 141 and a clamping support 142, one end of the C-shaped hook 141 is fixedly connected with a screw 143, one end of the screw 143, which is far away from the C-shaped hook 141, is fixedly connected with the upright 131, the clamping support 142 is provided with a through hole 147, the clamping support 142 is movably sleeved on the screw 143 through the through hole 147, and the screw 143 is further in threaded connection with an adjusting nut 144.
Further, the host 5 includes a signal synchronization module 51, a data processing module 52 and a display module 53, wherein the data processing module 52 is used for receiving, processing and storing data; the output end of the leakage current sensor 1 is in wireless communication connection with the input end of the signal synchronization module 51 through the first wireless communication module 2, and the output end of the voltage isolator 3 is in wireless communication connection with the input end of the signal synchronization module 51 through the second wireless communication module 4; the output end of the signal synchronization module 51 is connected with the input end of the data processing module 52, and the output end of the data processing module 52 is connected with the display module 53 in a communication way.
Further, the host 5 includes a signal output module 54, the signal output module 54 provides a plurality of interfaces for transmitting data to the computer; the signal can be transmitted to the computer end for processing, and the functionality of the utility model is increased.
Further, a sleeve 145 is movably sleeved on the upright post 131, one end of the screw 143, which is far away from the C-shaped hook 141, is fixedly connected with the sleeve 145, a screw 146 is arranged outside the sleeve 145, the threaded end of the screw 146 penetrates through the sleeve 145 to tightly push against the upright post 131, and the screw 146 is in threaded connection with the sleeve 145; allowing the relative positions of the holder 14 and the current transformer to be adjusted.
Furthermore, the top end of the clamping support 142 is arc-shaped, so that the problem that a sharp corner at the top end blocks a wire in the process of guiding and placing in the use process is avoided.
The working principle of the utility model is as follows: firstly, the discharge counter matched with the zinc oxide arrester is short-circuitedThen, the current sampling component 12 is fixed on the base earth wire of the zinc oxide arrester, and the leakage current sensor 1 measures the leakage current phasor I of the zinc oxide arrester through the current sampling component 12XAnd is combined withXWirelessly transmitted to the signal synchronization module 51 through the first wireless communication module 2;
the voltage isolator 3 collects the voltage phasor of the PT terminal box 7 through the voltage sampling clamp 32 and then wirelessly transmits the voltage phasor to the signal synchronization module 51 through the second wireless communication module 4;
the signal synchronization module 51 receives the leakage current phasor I of the zinc oxide arresterXAnd voltage phasor, synchronously transmitting current phasor I at the same timeXAnd the voltage phasor is sent to the data processing module 52, the data processing module 52 performs digital processing such as filtering, amplification, sampling and the like on the data, and fundamental wave components of the data are respectively extracted from the data and the data by using a harmonic analysis method to calculate the resistive current Ir1P of the data. According to the production type test or on-site handover test of the reference equipment and the routine test result, longitudinally comparing the results with the test procedure operation reference value, and then judging the insulation condition of the reference equipment; the received data and the calculated data are then displayed by the display module 53 and stored.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a zinc oxide arrester live line measuring device which characterized in that: the leakage current sensor comprises a leakage current sensor (1), a voltage isolator (3) and a host (5);
the leakage current sensor (1) is provided with a first wireless communication module (2), the input end of the leakage current sensor (1) is electrically connected with a current sampling assembly (12), and the output end of the leakage current sensor is in wireless communication connection with the host (5) through the first wireless communication module (2);
the voltage isolator (3) is provided with a second wireless communication module (4), the input end of the voltage isolator (3) is electrically connected with a voltage sampling clamp (32), and the output end of the voltage isolator is in wireless communication connection with the host (5) through the second wireless communication module (4);
the current sampling assembly (12) comprises a current transformer (13) and a fixer (14) for fixing the current transformer (13) on a wire, wherein the current transformer (13) is fixedly connected with a stand column (131), and the fixer (14) is fixedly connected with the stand column (131).
2. The live line measurement device of the zinc oxide arrester according to claim 1, characterized in that: the fixer (14) comprises a C-shaped hook (141) and a clamping support (142), one end of the C-shaped hook (141) is fixedly connected with a screw rod (143), one end, far away from the C-shaped hook (141), of the screw rod (143) is fixedly connected with the upright column (131), a through hole (147) is formed in the clamping support (142), the clamping support (142) is movably sleeved on the screw rod (143) through the through hole (147), and an adjusting nut (144) is further connected to the screw rod (143) in a threaded manner.
3. The live line measurement device of the zinc oxide arrester according to claim 1, characterized in that: the host (5) comprises a signal synchronization module (51), a data processing module (52) and a display module (53), wherein the data processing module (52) is used for receiving, processing and storing data; the output end of the leakage current sensor (1) is in wireless communication connection with the input end of the signal synchronization module (51) through a first wireless communication module (2), and the output end of the voltage isolator (3) is in wireless communication connection with the input end of the signal synchronization module (51) through a second wireless communication module (4); the output end of the signal synchronization module (51) is connected with the input end of the data processing module (52), and the output end of the data processing module (52) is in communication connection with the display module (53).
4. The live line measurement device of the zinc oxide arrester according to claim 3, characterized in that: the host (5) also comprises a signal output module (54), and the signal output module (54) provides a plurality of interfaces for transmitting data to the computer.
5. The live line measurement device of the zinc oxide arrester according to claim 2, characterized in that: the upright post (131) is movably sleeved with a sleeve (145), one end, far away from the C-shaped hook (141), of the screw rod (143) is fixedly connected with the sleeve (145), a screw (146) is arranged outside the sleeve (145), the threaded end of the screw (146) penetrates through the sleeve (145) to tightly push against the upright post (131), and the screw (146) is in threaded connection with the sleeve (145).
6. The live line measurement device of the zinc oxide arrester according to claim 2, characterized in that: the top end of the clamping support (142) is arranged in an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445269.9U CN216209531U (en) | 2021-10-11 | 2021-10-11 | Zinc oxide arrester live line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445269.9U CN216209531U (en) | 2021-10-11 | 2021-10-11 | Zinc oxide arrester live line measuring device |
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| Publication Number | Publication Date |
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| CN216209531U true CN216209531U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122445269.9U Active CN216209531U (en) | 2021-10-11 | 2021-10-11 | Zinc oxide arrester live line measuring device |
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| CN (1) | CN216209531U (en) |
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2021
- 2021-10-11 CN CN202122445269.9U patent/CN216209531U/en active Active
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